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SPEC: 1.48" intake, 1.22" exhaust, combustion chamber 21cc. Very modified 12G940 head, suitable for race applications and extensively modified big bore engines. The exhaust valve is offset to minimize cracking between the seats.
All Longman heads are fully ported and polished and come assembled with Longman's exclusive valves, guides, springs and retainers.
Gt15 Head 37.7 X 31mm W/offset Exhaust Valves

Gt15 Head 37.7 X 31mm W/offset Exhaust Valves

Gt15 Head 37.7 X 31mm W/offset Exhaust Valves
Part No: C-AHT221A
This item is not available.
Fits the following:
Classic Mini
Sprite & MG Midget
Morris Minor
SPEC: 1.48" intake, 1.22" exhaust, combustion chamber 21cc. Very modified 12G940 head, suitable for race applications and extensively modified big bore engines. The exhaust valve is offset to minimize cracking between the seats.
All Longman heads are fully ported and polished and come assembled with Longman's exclusive valves, guides, springs and retainers.
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Related Technical Articles:
Competition Cylinder Heads
Created: January 30, 2000
A selected range of modified cylinder heads are available to suit a wide variety of applications. All port and chamber modifications are carried out by experts to current state of the art specifications. Therefore, actual specifications may alter slightly as gas flow and port velocity efficiency improvements are developed. Where large bore heads are used on small bore engines (i.e. 12G940 casting on 948/1098cc block), it is necessary to check full lift of exhaust valve, and pocket the block as necessary.